Page 6 of 8

### Question 5

(a) | Write 18 as a percentage of 32. |

(b) | 21 students in a class were boys and 13 were girls. Calculate the percentage of boys in the class. |

(c) | A maths student scored 42 marks out of 60. What was this mark as a percentage? |

(d) | In a local election one candidate gained 5600 votes from a total of 18500 votes cast. What was the candidate’s percentage share of the total vote? |

(e) | 15 out of 21 snooker balls are red. What percentage of the total are red? |

(f) | A box of chocolates contained 15 plain and 20 milk chocolates. Calculate the percentage of the total which were plain chocolates. |

(g) | Write 230 as a percentage of 650. |

(h) | One hour of a television broadcast included eight minutes of adverts. What percentage of the total time was adverts? |

(i) | At the end of a chess game there were five white pieces and nine black. What percentage of the pieces left on the board were white? |

(j) | A 230g carton of yoghurt contains 7g of fat. What is the percentage fat content by weight of the yoghurt? |

(k) | In a survey, 35% said they preferred coffee to tea. If 793 preferred tea, how many people took part in the survey? |

(l) | The average salt content of water from the Dead Sea is 33% by weight. A sample of this water contained 7.5g of salt. What was the weight of the sample? |